Rubberexpansionjoint.com ST Style molded rubber expansion joints are designed with a metal reinforcing collar molded into the necks of the carcass. This allows the ST style to use light weight split retaining rings (sold separately) to back-up the molded integral rubber flange that is molded into the ST. The ST style is also available in a filled arch design know as style STF. The ST can be made custom with multiple arches to improve movement, non standard flanges or enlarge flange type (different size flanges on each end), non standard lengths, as a reducer type, or with permanent offsets built into the joint. Larger sizes are available on request. The ST and STF are available on request to meet the requirements of the U.S.C.G. The STF style or filled arch will reduce allowable movements by 50%. It will also increase spring rates by 4 times that of the ST style. The filled arch design is a great option to reduce turbulence and eliminates the ability of solids to settle and remain in the arch. The “filler” in the filled arch is made from a low durometer soft rubber material that is bonded to the ID of the traditional arch. The ID of the STF has a one piece seamless inner tube eliminating the ability of the filler to come loose in service.

 

SPOOL TYPE (ST)

Dimensions
 
Movement Distance
Operating Condition
Weight (LBS)
Pipe Size
O'all Length
Flange OD
Bolt Circle
No. of Bolt Holes
Bolt Hole Size
Retaining Ring Thickness
Axial Compression
Axial Extension
Lateral Deflection
Angular Deflection
Max w.p. (psi)-3,-4
Max Vacuum
(in. of Hg)-5
Exp. Joint + Retaining Ring = Total
Control Unit
(2 Rod)-1,-2
2"
6"
6"
4 3/4"
4
3/4"
3/8"
7/16"
1/4"
±1/2"
19°
150
26
8.0+3.50=11.50
6.75
2 1/2"
6"
7"
5 1/2"
4
3/4"
3/8"
7/16"
1/4"
±1/2"
15°
150
26
11.5+5.50=17.00
7.50
3"
6"
7 1/2"
6"
4
3/4"
3/8"
7/16"
1/4"
±1/2"
13°
150
26
13.0+5.75=18.75
7.75
4"
6"
9"
7 1/2"
8
3/4"
3/8"
7/16"
1/4"
±1/2"
10°
150
26
16.0+7.00=23.00
7.00
5"
6"
10"
8 1/2"
8
7/8"
3/8"
7/16"
1/4"
±1/2"
150
26
19.0+7.75=26.75
7.50
6"
6"
11"
9 1/2"
8
7/8"
3/8"
7/16"
1/4"
±1/2"
150
26
21.0+9.00=30.00
8.50
8"
6"
13 1/2"
11 3/4"
8
7/8"
3/8"
11/16"
3/8"
±1/2"
150
26
29.0+15.75=44.75
11.25
10"
8"
16"
14 1/4"
12
1"
3/8"
11/16"
3/8"
±1/2"
150
26
45.0+16.25=61.25
24.50-1
12"
8"
19"
17"
12
1"
3/8"
11/16"
3/8"
±1/2"
150
26
62.0+22.75=84.75
26.00-1
14"
8"
21"
18 3/4"
12
1 1/8"
3/8"
11/16"
3/8"
±1/2"
150
15
75.0+27.00=102.00
31.00-1
16"
8"
23 1/2"
21 1/4"
16
1 1/8"
3/8"
11/16"
3/8"
±1/2"
150
15
90.0+33.00=123.00
38.50-2
18"
8"
25"
22 3/4"
16
1 1/4"
3/8"
11/16"
3/8"
±1/2"
150
15
92.0+36.50=128.50
41.00-2
20"
8"
27 1/2"
25"
20
1 1/4"
3/8"
13/16"
7/16"
±1/2"
150
15
111.0+40.00=151.00
41.75-2
24"
10"
32"
29 1/2"
20
1 3/8"
3/8"
13/16"
7/16"
±1/2"
150
15
145.0+48.00=193.00
58.75


SPOOL TYPE: FILLED ARCH (STF)

Dimensions
 
Movement Distance
Operating Condition
Weight (LBS)
Pipe Size
O'all Length
Flange OD
Bolt Circle
No. of Bolt Holes
Bolt Hole Size
Retaining Ring Thickness
Axial Compression
Axial Extension
Lateral Deflection
Angular Deflection
Max w.p. (psi)-3,-4
Max Vacuum
(in. of Hg)-5
Exp. Joint + Retaining Ring = Total
Control Unit
(2 Rod)-1,-2
2"
6"
6"
4 3/4"
4
3/4"
3/8"
7/32"
1/8"
±1/4"
9.5°
150
26
9.0+3.50=12.50
6.75
2 1/2"
6"
7"
5 1/2"
4
3/4"
3/8"
7/32"
1/8"
±1/4"
7.5°
150
26
12.5+5.50=18.00
7.50
3"
6"
7 1/2"
6"
4
3/4"
3/8"
7/32"
1/8"
±1/4"
6.5°
150
26
14.5+5.75=20.25
7.75
4"
6"
9"
7 1/2"
8
3/4"
3/8"
7/32"
1/8"
±1/4"
150
26
17.5+7.00=24.50
7.00
5"
6"
10"
8 1/2"
8
7/8"
3/8"
7/32"
1/8"
±1/4"
150
26
21.0+7.75=28.75
7.50
6"
6"
11"
9 1/2"
8
7/8"
3/8"
7/32"
1/8"
±1/4"
150
26
23.0+9.00=32.00
8.50
8"
6"
13 1/2"
11 3/4"
8
7/8"
3/8"
11/32"
3/16"
±1/4"
150
26
32.0+15.75=47.75
11.25
10"
8"
16"
14 1/4"
12
1"
3/8"
11/32"
3/16"
±1/4"
2.5°
150
26
49.5+16.25=65.75
24.50-1
12"
8"
19"
17"
12
1"
3/8"
11/32"
3/16"
±1/4"
2.5°
150
26
68.5+22.75=91.25
26.00-1
14"
8"
21"
18 3/4"
12
1 1/8"
3/8"
11/32"
3/16"
±1/4"
150
15
82.5.0+27.00=109.50
31.00-1
16"
8"
23 1/2"
21 1/4"
16
1 1/8"
3/8"
11/32"
3/16"
±1/4"
150
15
99.0+33.00=132.00
38.50
18"
8"
25"
22 3/4"
16
1 1/4"
3/8"
11/32"
3/16"
±1/4"
1.5°
150
15
101.5+36.50=138.00
41.00
20"
8"
27 1/2"
25"
20
1 1/4"
3/8"
13/32"
7/32"
±1/4"
1.5°
150
15
122.5+40.00=162.50
41.75
24"
10"
32"
29 1/2"
20
1 3/8"
3/8"
13/32"
7/32"
±1/4"
1.5°
150
15
159.5+48.00=207.50
58.75

Size
100% EPDM
100% Neoprene
100% Butyl
Retaining Rings
Retaining Rings
Control Unit (Control Rods)
Control Unit (Control Rods)
Pipe
Part No.
Price
Part No.
Price
Part No.
Price
Carbon Steel Zinc Plated Part No.
Price (Set=4)
T-304      
Part No.
Price (Set=4)
Carbon Steel Zinc Plated Part No. 
Price (Set)
T-304     
Part No. 
Price (Set)

Open Arch

2"
 $191.46  $180.82  $232.57  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $198.00  $187.00  $293.90  $12.21  $161.05  $33.96  $79.24
3"
 $199.64  $188.55  $242.70  $17.79  $184.80  $33.96  $79.24
4"
 $193.36  $182.61  $235.13  $20.34  $236.33  $33.96  $79.24
5"
 $232.22  $220.26  $284.04  $24.42  $262.93  $33.96  $79.24
6"
 $291.00  $274.83  $353.97  $25.41  $298.48  $38.67  $90.23
8"
 $353.33  $333.70  $430.02  $34.89  $443.25  $43.71  $101.99
10"
 $442.83  $417.28  $539.21  $45.15  $547.95  $72.78  $169.82
12"
 $616.12  $580.58  $751.27  $68.64  $784.28  $83.25  $194.25
14"
 $748.83  $718.87  $913.40  $88.89  $1,040.25  $107.46  $250.74
16"
 $853.93  $819.77  $1,043.35  $111.87  $1,284.88  $167.46  $390.74
18"
 $939.23  $901.66  $1,153.35  $157.62  $1,219.35  $190.26  $443.94
20"
 $1,105.65  $1,061.42  $1,357.85  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,557.38  $1,495.08  $1,906.13  $223.74  $1,876.90  $228.18  $532.42

Filled Arch

2"
 $214.05  $202.16  $259.75  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $221.04  $208.76  $267.55  $12.21  $161.05  $33.96  $79.24
3"
 $223.32  $210.91  $271.12  $17.79  $184.80  $33.96  $79.24
4"
 $216.32  $204.30  $262.65  $20.34  $236.33  $33.96  $79.24
5"
 $261.17  $246.66  $317.57  $24.42  $262.93  $33.96  $79.24
6"
 $325.63  $307.54  $395.52  $25.41  $298.48  $38.67  $90.23
8"
 $395.51  $373.54  $480.64  $34.89  $443.25  $43.71  $101.99
10"
 $495.85  $467.24  $602.84  $45.15  $547.95  $72.78  $169.82
12"
 $690.46  $650.62  $840.42  $68.64  $784.28  $83.25  $194.25
14"
 $872.28  $837.38  $1,061.55  $88.98  $1,040.25  $107.46  $250.74
16"
 $996.00  $956.16  $1,213.85  $111.87  $1,284.88  $167.45  $390.74
18"
 $1,099.83  $1,055.83  $1,346.05  $157.62  $1,219.35  $190.26  $443.94
20"
 $1,294.80  $1,243.01  $1,584.85  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,818.95  $1,746.19  $2,220.03  $223.74  $1,876.90  $228.18  $532.42

U.S. COAST GUARD APPROVED: Unthreaded Bolt Holes

100% EPDM
 
Retaining Rings
Retaining Rings
Control Unit (Control Rods)
Control Unit (Control Rods)
SIZE
OPEN ARCH
Price
FILLED ARCH
Price
Zinc Plated
Price
T-304
Price
Zinc Plated
Price
T-304
Price
2"
 $196.46  $219.05  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $203.00  $226.04  $12.21  $161.05  $33.96  $79.24
3"
 $204.64  $228.32  $17.79  $184.80  $33.96  $79.24
4"
 $198.36  $221.32  $20.34  $236.33  $33.96  $79.24
5"
 $238.22  $266.17  $24.42  $262.93  $33.96  $79.24
6"
 $296.00  $330.63  $25.41  $298.48  $38.67  $90.23
8"
 $358.33  $400.51  $34.89  $443.25  $43.71  $101.99
10"
 $447.83  $500.85  $45.15  $547.95  $72.78  $169.82
12"
 $621.12  $695.46  $68.64  $784.28  $83.25  $194.25
14"
 $753.83  $877.28  $88.98  $1,040.25  $107.46  $250.74
16"
 $858.93  $1,001.00  $111.87  $1,284.88  $167.46  $390.74
18"
 $944.23  $1,104.83  $157.87  $1,219.35  $190.26  $443.94
20"
 $1,110.65  $1,299.80  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,562.38  $1,823.95  $223.74  $1,876.90  $228.18  $532.42


Remarks:

  • The joint body is available in 3 standard combinations of the (tube/cover): EPDM/EPDM, Neoprene/Neoprene, and Butyl/Butyl. The (tube/cover) are also available in a combination of the following additional materials on special order: Neoprene, EPDM, Chlorobutyl, Nitrile, Hypalon®, Viton®, Natural Rubber etc. Please see the materials table to determine what material is best for your application.
  • Standard flange drilling is ANSI 150#. Also available ANSI 25/125/250/300#, Navy, DN, BS, and JIS Drilling as well as others.
  • Standard flange material is carbon steel that has been treated with a rust inhibitor. Also available T-304, T-316 and other alloys.
  • All Movements are non-concurrent. Contact www.rubberexpansionjoint.com to determine if your concurrent movements are acceptable.
  • See the “Control Unit” page to determine if your application requires control units. Control units must be used to protect the joint if the piping is not properly anchored. Control units are sold separately from the rubber joint.
  • Liners are available for the ST and STF style. Please contact www.rubberexpansionjoint.com.

Notes:

  1. Control unit (3 Rod) Standard
  2. Control unit (4 Rod) Standard
  3. Maximum working pressure is based on 190° F. See Temperature vs. Pressure chart for operating temperatures above 190° F.
  4. Test pressure is 1.5 times working pressure. Burst pressure is approximately 4 times maximum working pressure.
  5. The vacuum rating is based on the joint installed in the neutral length. Joints should not be installed in the extended position on vacuum applications. Please advise if the joint will be subjected to full vacuum. The use of an internal vacuum ring may be necessary.

temperature vs working pressure charts installation and inspection instructions read notes and remarks